http://php.net/manual/en/control-structures.switch.php 例子

$today = date("D");

    switch($today){

        case "Mon":

        case "Tue":

            echo "Today is Tuesday or Monday. Buy some food.";

            break;

        case "Wed":

            echo "Today is Wednesday. Visit a doctor.";

            break;

        case "Thu":

            echo "Today is Thursday. Repair your car.";

            break;

        default:

            echo "No information available for that day.";

            break;

    }

http://php.net/manual/en/control-structures.switch.php 例子

$today = date("D");

    switch($today){

        case "Mon":

        case "Tue":

            echo "Today is Tuesday or Monday. Buy some food.";

            break;

        case "Wed":

            echo "Today is Wednesday. Visit a doctor.";

            break;

        case "Thu":

            echo "Today is Thursday. Repair your car.";

            break;

        default:

            echo "No information available for that day.";

            break;

    }

我建议你按(手动)开关。

switch ($your_variable)
{
    case 1:
    case 2:
        echo "the value is either 1 or 2.";
    break;
}

解释

就像你想要执行单个语句的值一样，你可以把它放在没有break的地方，直到或除非找到break。它将继续执行代码，如果发现了break，它将从switch case中出来。

Try

switch($value) {
    case 1:
    case 2:
        echo "the value is either 1 or 2";
        break;
}

switch ($value) 
{
   case 1:
   case 2:
      echo 'the value is either 1 or 2';
   break;
}

请尝试本文中的以下示例:http://phpswitch.com/

可能的切换案例:

(i).简单的switch语句

switch语句是奇妙而神奇的。它是语言的一部分，允许您在值的不同选项之间进行选择，并根据设置的值运行不同的代码段。

每个可能的选项都由switch语句中的大小写给出。

例子:

switch($bar)
{
    case 4:
        echo "This is not the number you're looking for.\n";
        $foo = 92;
}

(ii).分隔代码块

switch的主要警告是，每个case都会运行到下一个case，除非你用break停止它。如果将上面的简单情况扩展到情况5:

例子:

case 4:
    echo "This is not the number you're looking for.\n";
    $foo = 92;
    break;

case 5:
    echo "A copy of Ringworld is on its way to you!\n";
    $foo = 34;
    break;

(iii).对多种情况使用过渡

因为switch会一直运行代码，直到它找到一个断点，所以我们很容易就可以采用fallthrough的概念，在多个情况下运行相同的代码:

例子:

案例2:

case 3:
case 4:
    echo "This is not the number you're looking for.\n";
    $foo = 92;
    break;

case 5:
    echo "A copy of Ringworld is on its way to you!\n";
    $foo = 34;
    break;

(iv).高级切换:条件情况

PHP的开关不仅允许您打开特定变量的值:您可以使用任何表达式作为case之一，只要它为case提供了要使用的值。举个例子，下面是一个使用switch编写的简单验证器:

例子:

switch(true)
{
    case (strlen($foo) > 30):
        $error = "The value provided is too long.";
    $valid = false;
    break;

    case (!preg_match('/^[A-Z0-9]+$/i', $foo)):
        $error = "The value must be alphanumeric.";
    $valid = false;
    break;

    default:
    $valid = true;
    break;
}

我想这也许能帮你解决问题。